Wireless-telegraph receiver.



W. M. WAY.r WIRELESS TELBGBAPE RECEIVER'.

APPLIOIATION FILED MAR. 7, 1908.

918,618. y PatentedAbr.2o,19o9.

i714 if 127@ fyigid avvento:

UNITED sTATns PATENT minion.-

WESLEY M. WAY, OF AUSTIN, TEXAS, ASSIGNOR 'lO GEORGE W. TROMMLITZ, OF GALVESTON,

TEXAS.

WIRELESS-TELE GRAPH RECEIVER.

No. l918,618.

specification f Letters Patent.

Patented April 20, 1909.

Application filed March 7, 1908. Serial N0. 419,780.

Wireless-Telegraph Receiver, of 'which the following is a specification.

This invention has reference to improvements in wireless telegraph receivers, that is, means for receiving intelligence communicated by electric waves, and is designed more articularly for using siliconor other crystalline substance as the detector element. The present invention comprises a holder for a lump of the rough crystalline substance together with means for adjusting a movable circuit terminal in the proper relation to the crystalline` substance when seated in the holder, and provision is made for all the adjustments found necessary.

More specifically considered, the invention comprises a cup or holder for a crystal or a mass of crystals for the substance used capable of rotating on a vertical axis, and in conjunction with this holder there is a carriage also capable of rotative movement upon a vertical axis. The carriage supports a bar mounted upon trunnions so as to move about a horizontal axis, and this bar is provided with opposing springs so that it may be adjusted accurately as to the pressure desired, and jarried by the bar is a terminal screw which may be brought intecontact with the crystal or mass oi crystals in the holder. The carriage and the parts supported thereby are connected up on one side of the circuit of the aerial and the holder f orthe crystal is connected up on the other side so that the ether or llertzian waves must pass through the crystal. The detector may bc coupled up to the aerial and receiver circuit in the usual manner.

The invention will be best understood from a. consideration of the Jfollowing detail description taken in connection withthe ac companying drawings iorming part of this.

type. on one side of the trnnnions and the long Referring to the drawings, there is shown a base 1 which may be of any suitable ma terial, and it 1s to be considered .indicative of any suitable support since the parts' mounted upon the base. may b'e otherwise mounted. This base is of course of suitable insulating material. Fast upon the base near one end thereof is a plate 2 secured ton the base by screws 3 o r in any other suitable manner. Rising from the middle `I4f the base is a post 4t which may be suit-ably screw threaded for the reception of a clamp nut 5.

Mounted upon the base 2 is a yoke-shaped carriage 6 suitably perforated for the passage of the post 4, and this carriage is held to the plate 2 by means of the clamp nut 5, the post Il passino through the carriage at a point midway oi its length. vThe carriage may consist of a single metallic strip having its ends bent at approximately right angles to the n'iiddle portion and extending upward with the ends 7 pa `allel one to the other but spaced apart an appropriate distance. llach leg end 7 is appropriately tapped for the passage ofa pivot screw or thumb screw S, to -which latter there is applied a clamp nut t). The ends of the screws S are socketed for the reception of the pointed trunnions 10 either formed on a bar 1l or made of a rod pointed at each end and extending laterally through the bar l1. Both the bar l1 and the truiinions 10 may be similar in construction to the oidiiiaiy key lever of the telegraph t 'ansmitter oi the commercial This bar 11 has a short extension l2 member on the other side of the trunnions. About midway of the length ot' the long end the bar 11 is tapped for the passage oi a thumb screw 13, and this thumb screw carries a clamp nut 1l. The freeend. of the thumb screw has secured thereto a hook receiving one end of a helical spring 1G, the other end of which engages a hook 1T fast on the corresponding side of the carriage G y adjacent to the clamp nut On the other side of the carriage from the hook 17 is another hook 1S receiving one end of a helical spring 19, the other end of which is fast on a hook 2O secured to the end l2 of the arm l1. The end 12 of the bar 11 remote from the extension 10 is tapped for the passage of a long thumb screw 21 carrying a clamp nut 22.

2i l oisis Fast upon the base l at the end thereofrerelative sense only, since they may rotate on mote from the plate 2, there is secured a axes set at any angle to the Vertical, a1- cylindrical block 23 by means of a screw 24 though usually the instrument will be used or in any other manner. n top ofthis block 'upon a horizontal surface so that the axis of 5 is a plate 25 secured thereto by an overhangthe cup and holder are really substantially 70 liange 2G of the screwsleeve 27 adapted vertical.' l y to thread on the block 23. -Formed|fon the lVhat is claimed is:` plate 25 at its center is a. boss 27 fromwhich l.. An electric wave detector comprising a rlses'a number of outwardly-extending arms cup or holder for a suitable crystalline mass,

2S so grouped as to constitute a cup'or holder 'said cup being rotatable, a carriage movable 75 l ror a mass 29 or' suitable material suchas a about an axis parallel to the axis of rotation crystal or a group of crystals, and preferofthe cup or holder, an arm pivotally conably a rough crystal or vgroup of crystals of nected to the carriage and movable about an silicon, since the last-named substance is axis at right angles to the axis of rotation, found to give most excellent results. rlhe of the carriage an adjustable contact screw 80 location of the screw 21 and of the cup carried by the arm in position to engage a formed of the arms 28 is such that when a crystalline mass carried by the holder, and massl29 is seated in the cup the free end of' opposing springs connected to thev carriage the screw 2l will make contact therewith. and to the arm on opposite 'sides of the pivot 2O Mounted upon the' base l are two binding ofthe latter. e v posts 30`3l. The binding post 30 is con- 2.'. Anelectric wave detector comprising a, nected by a conductor 32 to the, plate 2, ,holder for a crystal or mass of crystals, and which like the other parts of the structure a universally mounted terminal arrangedqto e aside from the base and the crystalline mass engage the crystalline mass, said terminal 29 is made of metal, and the binding post comprising a'rotatable support,.an arm iv 90 8l is connected by' a conductor 334 td the oted on-said support for movement at right block23. Of course the connections of the aiigle'sto the axis of the support, means on binding posts may be reversed. The circuitsaid arm .for engaging the crystalline mass terminals of the receiving aerial are indiwhen in the holder, and means for clamping.

By using the rough crystalline mass 29 tation about its axis. seated in the cup 28 and held therein by the 3. In an, electric wave detector, electric /screw 2l, the adjustment of the crystalline circuit terminals arranged to graspa crystalmass is insured, sinceshocks and jars will or `crystalline mass between them, 'one of cated at 34. the support in any adjusted position of ro- 95 not interfere with an adjustment once made, said terminals being provided with a cup or '100 ine mass and rotatable detectors of this character is avoided. Furabout a central longitudinal axis, and the thermore the cup or holder, because of the other-terminal being rotatable about an axis ngers 28, is readily shaped to the crystal spaced from the axis of the first named ter- 40 and because of its capability of rotation on iniiial and parallel therewith., 105

the block 23 may be turned upon a vertical 4. An electricwave detector comprising a axis to adjust the crystal to the screw- 2l. support or carriage having a movement of It is found that the rough crystalline pieces rotation about a suitable pintle, clamping give better results than lpieces that have means for holding the carriage in adjusted been ground down smooth. positions, an arm pivotally connected to the 110 he carriage 6, because of its capability of carriage for movement at right angles to the i rotative movement upon the pin or stud el. movement of rotation of thecarriage,clamp-L may be'moved about said pin or stud-as an ing means 'for locking the armv in anyo adaxis to bring the'end of the screw 2l into justed position, springs engaging the arm' on proper relation toy the crystal 29. B adopposite sides of its Vpivot and acting in op- 115.r

justing the pivot screws 8 so that the bar ll position, I means for adjusting one of .the` is free to move about its screws as an axis', springs, an adjustable circuit terminal carvthe bar 1l automatically 'adjusts itself to ried by the arm and having means for lockthe crystal." It' ,the screws 8 be made. tight ing it in adjusted position, a cup or holder then the adjustments are made through the for a crystal or crystalline mass in line with 120 screw-21. The two opposing springs 16 and vthe circuit terminal on the arm,l and rotatal9 are adjustable through the screw 413 and ble on an axis longitudinal to the adjustable W en once adjusted counteract jars and circuit terminal carried on the arm, and

' knocks, and thus theadjustment between thev "means'for carrying 'the cup or holder in adscrew 21'f-and the crystalline block or mass justed positions. c p 2l is maintained .automatically under the In an electric wave detector, a rotata-l Y various conditions of use. ble cup' or holder rotatable aboutits central he cup or Aholder and theA carriage. have longitudinal axis and adapted to hold a crys- "been described as lrotatable about vertical tal or crystalline mass, said cup or holder 5 axes but'this statement is to be taken in a constituting a circuit terminal, and another 130 circuit terminal yieldingly engaging sueh crystalline mass when in the Cup and mounted for adlustment on an axi5-spaced .troni but parallel to the axiS of rotation of the cup or holder.

6. In an electric wave detector, a rotatable cup or holder rotatable about its central longitudinal axis and adapted to hold a crystal or crystalline mass, said cup or holder constituting a circuit terminal, means 'for clamping the cup or holder in any adjusted position of rotationl` and :x uil-enit terminal .yieldingly' engaging such cryh'tailine mass when in the cup and mounted for adjustna'nl on :in axis spaced from but parallel willi the axis olf rotation of the Cup or holder.

In testimony that l claim the foregoing as my own, l have hereto allixed nl)vv signature in the prvwnf'e ot' two witnesses.

WESLEY M. lVAY. ll'itnesses:

OLIX W. hmmm, (lirici: (hmm. 

